Very Small Aperture Terminal (VSAT) satellite networks are used where land lines are not widely available. Satellite data networks also help to connect geographically dispersed companies with a hub and spoke network topology and medium throughput requirements. Typical examples are retail businesses, banking institutions and Airline ticketing systems.
Satellite systems add significant latency when used for two-way data communications - 540 ms to 800ms in a typical environment. (This is the time required for the signal to travel 35,800 km into space and back to Earth). This large Round Trip Time (RTT) impairs performance of almost all TCP applications. In addition, it makes it impossible to deploy real-time applications, like voice, over a VSAT link.
Silver Peak Solution
The following Silver Peak features mitigate the impact of impairments that are unique to satellite networks:
Silver Peak offers numerous TCP and protocol acceleration techniques to reduce the impact of latency (and loss) on application performance across satellite links.
QoS is used to prioritizes traffic types, and allocate bandwidth accordingly.This improves jitter and latency by enforcing specific policies that govern how to route traffic. Silver Peak can both honor and set DSCP/MPLS markings on a per-application basis for added QoS granularity.
